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(No Model.)

J. J. HOGAN. PARTITIONBD PIPB. No. 459,908. Patented Sept. 22,1891.

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UNITED STATES JOHN J. HOGAN, OF BROOKLYN, ,ASSIGNOR TO THE HOGAN ENGINEERIG COMPANY, OF NEV YORK, N. Y.

PARTITIONED PlPE.

SPECIFICATION forming part of Letters Patent No.

459,908, dama September 22, 1891.

Application filed August 31, 1889. Renewed March 9, 1891. Serial No. 384,374. (No model.)

T0 all whom it may concern:

Be it known that I, JOHN J. HOGAN, a citizen of the United States, residing at Brooklyn, Kings county, New York, have invented certain new and useful Improvernents in Partitioned Pipes, fully described and represented in the following specification and the accompanyingdrawings, formin g a part of the same.

The object of this invention is to furnish a cheap and strong pipe with pariition extended longitudinally through its bore, by which construction it is adapted to convey two separate fiuids or to conduct gas and electric wires separately to their destination.

In this invention a blank of T shape is first formed, with the lateral webs nearly twice as wide as the transverse web. The lateral webs are then bent with their edges adj acent to the edge of the transverse web, and are finally secured to one another and to such web by Weldin g, brazing, soldering, or othersuitable means. The pipe may be made of round, square, corru gated, or any other desired form externally, and the edges of the lateral webs may be either scarfed or butted where they are joined together.

The construction will be understood by reference to the annexed drawings, in which- Figure 1 is an end view of the T-shaped blank; Fig. 2, a view of the same, looking toward the transverse web; Fig. 3, an end view of a round pipe formed by scarfing the edges of the lateral webs and securing them together upon the edge of the transverse web. Fig. 4 is an end view of a similar pipe formed by butting the edges of the lateral web together and securing them upon the transverse-.web. Fig. 5 is an end view of a partitioned pipe of square form externally, and Fig. 6 is a perspective view of the completed pipe. Figs. 7 and 8 are alternative Sections of the T-shaped blank. w

In Figs. 1 and 2, a is the transverse web, and b the lateral webs, each of which is in my invent-ion made of suificient width to bend into a semicircle and lap upon the edge of the web a; The edges of the webs b may be scarfed and overlapped, as shown in Fig. 3, or they may be butted together, as shown in Figs. et and 5. The pipe may be made of metal adapted only for soft solder, or of copper,

brass, and harder materials adapted for brazing. The pipe may also be made of iron, in which case the transverse web amaybeforined heavier-that is, thicker-t-han the webs b,to sustain the pressure required in welding the edges of the lateral webs thereon,if required. Such welding is preferably effected by heating the entire blank to a suitable temperature, either before or after the lateral webs are bent in semicircular Shape, and the blank, when thus heated, is passed through a die or between rolls adapted to compress the edges of the lateral webs upon the transverse web, to unite the edges of the three webs securely together. The operation of such rolls or dies is well known in the art, and the bending of the webs to bring their edges in contiguity may be effected by such rolls or dies during the welding operation, or the lateral webs may be bent with their edges in contact before they are heated. The lateral webs may be partially bent when the blank is first formed, and thus adapted more readily for bending, with their edges in contiguity, as shown in Fig. 7, where the lateral webs' are partly curved for subsequent Shaping into a round pipe, and in Fig. 8, where the lateral webs are shown inclined to the transverse web 'at an angle of forty-five degrees, to facilitate their forination into a square pipe, like that shown in section in Fig. 5, where the lateral webs are butted against the transverse web. The pipe c' when completed appears, as shown in Fig. 6, with a solid partition connected rigidly, with its opposite sides extending lengthwise of the pipe, dividingits interior into two longitudinal spaces c. By making one of the webs Z) wider and the other narrower than they are shown in Fig. 1 the partition may be located somewhat at one side of the center, if it be desired to form unequal spaces within the pipe; but the process of bending the lateral webs and securing them upon the transverse web would be the same in such case.

As the article which I have invented is dependent upon the method described herein, the process and product are inseparable, and both are therefore olaimed herein.

Having thus set forth niy invention, what I claim herein is- 1. The process of making partitioned pipes,

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which consists in fil'st forming a blank of T- of the tl'ansvei'se Web and seeul'ed thereto,

Section with the lateml Webs Widel' Jthan the transvel'se web; secondly, bending the edges of the lateml Webs Over upon the edge of the transverse web, and, thirdly, securing the edges of the lateral and transverse Webs t0 gethei', substantally as hei'ein set forth.

2. A par'ritioned pipe eonsisbing in a transverse Web formed with two integml lateral Io webs having' their edges bent upon the edg'e Substantially as set forth.

In testimony Whei'eof I have hereunto set my hand in the presence of two snbscribing' Witnesses.

JOHN J. I'IOGAN:

'Vitnesses:

CHARLES XV. CHAPIN, WM. F. M. ROGERS. 

